56results about How to "Trigger sensitive" patented technology

The invention discloses a handheld electric tool with an improved trigger, which comprises a tool body, a motor, a switch, an operating component, a main handle and an auxiliary handle, wherein the motor is disposed inside the tool body, the switch inside the tool body is used for controlling operation of the motor, the operating component fixedly connected to the tool body is driven by a motor, and the main handle and the auxiliary handle are disposed on the tool body. The auxiliary handle comprises an auxiliary handle holder, an auxiliary handle cover board, and a trigger disposed between the auxiliary handle holder and the auxiliary handle cover board, wherein the trigger is connected in a surrounding manner. The switch of the handheld electric tool can be triggered in each of the leftward, rightward and middle directions of the auxiliary handle, and the handheld electric tool is simple in overall structure, has fewer parts, and is easy in assembly and more flexible and more reliable in triggering. In addition, the auxiliary handle as an independent component can be separated from the tool body to be packed, so that load can be improved greatly.

The invention discloses a method and a system for measuring aspiratory flow velocity by a differential pressure type sensor. The method comprises the following steps: sensing a flow velocity signal bya sensing device and converting the flow velocity signal into a level signal; comparing the level signal with a predetermined level by a comparer; sampling the level signal by a sampler under the condition that the level signal is more than the predetermined level so as to acquire an AD sampling signal, and calculating the current flow velocity by a first processor according to the AD sampling signal; amplifying the level signal by an amplification circuit under the condition that the level signal is less than the predetermined level; and sampling the amplified level signal by the sampler soas to acquire the amplified AD sampling signal, and calculating the current flow velocity by a second processor according the amplified AD sampling signal.

The invention discloses an overvoltage protective device for an internet-of-things radio frequency emitter. The overvoltage protective device comprises an altering current power source, a direct current power source, a switch, a transformer, a rectifier tube, a voltage stabilizing device, an optocoupler relay, an altering current contactor, electromagnetic relay, a first diode, a second diode, a triode, a light-emitting diode, a potentiometer, a voltmeter, a first capacitor, a second capacitor, a third capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor and a sixth resistor. The overvoltage protective device for the internet-of-things radio frequency emitter has the advantages of being simple in circuit, sensitive to trigger, less in adopted element, small in size, easy to manufacture and low in cost and meanwhile has the function of protecting a preceding-stage power amplifier of the internet-of-things radio frequency emitter many times.

The invention discloses a gas leakage alarm device for industrial waste gas treatment, comprising an alternating-current power supply, a transformer, a first diode, a second diode, a third diode, a fuse, a first capacitor, a second capacitor, a third capacitor, first to eleventh resistors, a first light-emitting diode, a second light-emitting diode, a voltage regulator, a gas sensor, a potentiometer, a relay, a first operational amplifier, a second operational amplifier, a three operational amplifier, a first triode, a second triode, and a loudspeaker. The gas leakage alarm device for industrial waste gas treatment of the invention has the advantages of simple circuit structure, sensitive triggering, fewer elements, small size, low cost, easy manufacture, convenient carrying, high degree of automation and timely alarm, and can effectively control the opening of an external exhaust fan to achieve the purpose of exhausting harmful gases.

The invention relates to a bedding for night urinary control training, which comprises a bed sheet, a coverlet and an alarm component. The bed sheet is provided with a bed sheet body and a bed periphery, the bed sheet body comprises a surface layer, a water absorption layer and a bed sheet waterproof layer, the water absorption rate of the water absorption layer is larger than or equal to 200%, and the water absorption layer is made from materials with drip diffusion time larger than or equal to 10 s and smaller than or equal to 20 s; the bed periphery is fixed on the periphery of the bed sheet body, and elastic bands are sewn on the edge of the bed periphery; the coverlet comprises a top layer, a coverlet waterproof layer and a bottom layer; the alarm assembly comprises a wire, a power supply, a switch, an audible and visual alarm and a shell, wherein a trigger wire of the wire is fixed in the water absorption layer; and the surface layer, the top layer and the bottom layer are all made of cotton. The bedding for night urinary control training is convenient to replace, will not pollute other bedding articles, and is beneficial for patients and family members to insist in awakening treatment for a long time; sufficient time can be provided for a patient to be in contact with wet urine, and micturition reflex of the brain is established. The triggering is sensitive, and the awakening effect can be ensured.

The invention relates to the technical field of building design, and discloses a casement window automatic closing device based on capacitance sensing. The casement window automatic closing device comprises a frame and a window body. An induction assembly is movably connected in the frame. An electromagnet is fixedly connected in the frame. A sliding rail is fixedly connected in the frame. A sliding rod is movably connected in the sliding rail. The outer portion of the sliding rod is movably connected with a first spring, and the outer portion of the first spring is movably connected with a connecting rod. Under the interaction of the electromagnet, the sliding rail, the sliding rod, the first spring, the connecting rod, an iron block, a first gear, a second gear and a chain, it can be guaranteed that the device can achieve automatic window closing when it is rains, triggering is sensitive, the arrangement will meet use of actual use, the situation that severe economic losses of electric appliance damage and the like are caused due to the fact that rainwater enters rooms is greatly avoided, and the device is more suitable for regions with weather changing rapidly.

The invention discloses a full-automatic fishing rod with an assisting power triggering device, which is provided with a kinetic energy storage support rod and an assisting power triggering mechanism, wherein the support rod and the triggering mechanism are arranged at the upper part of the fishing rod, so a user can obtain great visibility, flexible triggering and easy operation; the full-automatic fishing rod can be used together with various modes of handspikes, sea fishing rods or shore fishing rods, and is not only an eye-pleasing full-automatic fishing rod with bidirectional assisting power triggering, but can also be made into an individual fishing rod; the fishing effect of the fishing rod rivals that of the Taiwan fishing method owing to the assisted power in both pulling triggering and returning triggering; and the full-automatic fishing rod also has the function of automatic rod holding.

The invention relates to a switch cabinet. The invention discloses a high-voltage switch cabinet. The switch cabinet comprises a pressure relief mechanism, the pressure relief mechanism comprises a pressure relief base fixed on the inner surface of the upper top plate; the pressure relief base comprises a cylindrical pressure relief base side wall with the upper end and the lower end open and a pressure relief mounting base located at the lower end of the pressure relief base side wall and located in the pressure relief base side wall. The pressure relief mounting base is connected with the inner surface of the pressure relief base side wall through a plurality of connecting rods evenly arranged around the axis of the pressure relief base side wall. A pressure relief plate is installed atthe upper end of the side wall of the pressure relief base, a pressure relief channel is formed in the middle of the pressure relief plate, a pressure relief plug is arranged in the pressure relief channel, an electromagnet capable of attracting the pressure relief plate is installed on the upper end face of the side wall of the pressure relief base, and a longitudinally-arranged compression spring is installed between the lower surface of the pressure relief plate and the pressure relief installation base. The pressure relief mechanism is arranged on the switch cabinet, pressure relief can beconducted on gas with different pressures, triggering is sensitive, and safety can be effectively guaranteed.

The invention discloses a mouse trapping device. The mouse trapping device comprises a bottom plate, wherein the bottom plate is connected with a front side plate, a right side plate and a rear side plate; the front side plate, the right side plate and the rear side plate are connected with an upper cover plate; a box body with a left-side opening is formed by the upper cover plate, the bottom plate, the front side plate, the right side plate and the rear side plate; the upper end of the left-side opening of the box body is in rotary connection with a rotary shaft; one side of the rotary shaft is fixedly connected with a door plate; one side, opposite to the door plate, of the rotary shaft is fixedly connected with a door plate connecting rod; the box body is provided with an elastic part which is used for driving the door plate to rotate all the time so as to seal the opening of the box body; the upper cover plate is provided with a locking assembly which is used for locking a free end of the door plate connecting rod so as to enable the door plate to be at an open state; the box body is internally further provided with a triggering assembly which is used for driving the locking assembly to unlock the door plate connecting rod so as to close to the door plate. The mouse trapping device disclosed by the invention has the advantages of simple structure, sensitivity in triggering, low cost, convenience for installation and safety and reliability.

The invention discloses a tool for preventing a carbon brush from direction error in installation. The tool comprises a regulator, a carbon brush length control block, a PCB trigger plate and an alarm device; and the carbon brush is mounted on the regulator. The tool is characterized in that the carbon brush length control block is mounted on the regulator, the PCB trigger plate is mounted on the carbon brush length control block, the alarm device is arranged at the right end of the regulator and internally provided with an LED, a piezoelectric active buzzer and a battery, and the PCB trigger plate is connected with the LED and the piezoelectric active buzzer via leads. The tool has the advantages that the alarm device is triggered no matter which position of the PCB trigger plate is pressed when the carbon brush is mounted reversely, pseudo-connection does not occur, and during use, the tool is sensitive for triggering, safe and reliable.

The invention relates to a motor balancing mount including a support plate, a U-shaped pneumatic cylinder, the support plate corresponds to the upper end of the piston rod arranged on the support armsat both ends of the U-shaped pneumatic cylinder, the lower end of the piston in the supporting arms of the two ends of the U-shaped pneumatic cylinder is provided with a vibration damping spring, theU-shaped pneumatic cylinder comprises left and right mutually independent units with electromagnetic ventilation valves, A low end of that support plate close to the middle part of the U-shaped pneumatic cylinder is provided with a toggle rod, The lower end of the toggle bar is provided with a toggle plate which is inclined, a sliding bar mechanism is arranged at a position corresponding to the toggle plate, a travel switch fixed on a U-shaped pneumatic cylinder is arranged at one end of the sliding bar mechanism opposite to the toggle plate, and the travel switch is connected with a corresponding electromagnetic ventilation valve for control. The invention drives the toggle plate through the toggle lever, and then drives the slider mechanism to trigger the stroke switch to realize the motor height limitation, which is sensitive to triggering, precise to position limitation, convenient and quick to adjust and wide in use range.

The invention discloses a construction safety warning sign applied to engineering project management. The construction safety warning sign comprises a base, a column body and a warning plate, the baseand the warning plate are arranged at the upper side and the lower side of the column body respectively, the base is fixedly connected with the column body, the warning plate is rotationally connected to the upper end of the column body, and the column body is of a hollow structure; and a first motor is fixedly connected to the inner side wall of the upper portion of the column body, an output shaft of the first motor is fixedly connected with a winding roller, and the output shaft of the first motor is rotationally connected with the inner wall of the column body through a bearing. The construction safety warning sign has the advantages that a warning lamp is arranged on the warning plate, when a worker carries a large material to get close, steel in the material can generate magnetic attraction force with a balance weight ball, the balance weight ball deviates from the vertical direction and gets close to the side face, when the balance weight ball makes contact with the inner wallof an annular sleeve, the warning lamp is powered on to give a flash alarm, the flash alarm has a higher degree of identification, and therefore the occurrence of dangerous situations is avoided.

The invention discloses a sliding type anti-pinch escalator and aims to overcome the defects that an existing escalator anti-pinch trigger structure is an irreversible trigger structure, is limited by the strength requirement of an escalator and is slow to trigger. The sliding type anti-pinch escalator comprises an apron outer plate close to a step and an apron supporting plate far away from the step, wherein a sliding notch is formed in the apron outer plate; an anti-pinch plate is arranged on the sliding notch; a guide groove corresponding to the anti-pinch plate is formed in the apron supporting plate; the anti-pinch plate is slidably connected onto the apron supporting plate through the guide groove; and the anti-pinch plate is elastically connected with a safety switch. Compared with traditional deformation triggering, the triggering force of the anti-pinch plate at each position is the same, so that the triggering area is enlarged, the triggering is more sensitive, the personal injury is reduced, the anti-pinch plate is simple to reset after being triggered, the damage to the escalator is avoided, and the restarting work of the escalator can be quickly recovered.